Mangrove Creek flood map & planning overlays
A planning-constraint profile of Mangrove Creek
(Central Coast, NSW) - 19.09 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
19.09 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mangrove Creek's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Mangrove Creek
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 2 Oct 2026
Night movements: observed, lowest 5,500 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Mangrove Creek at a glance
How Mangrove Creek is zoned
Buying in Mangrove Creek? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 19.09 km², Mangrove Creek is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 5 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 132,644 m² across 57 parcels.
Who lives in Mangrove Creek
Census 2021 figures published by the ABS for the Mangrove Creek suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 987, and decile 5 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Calga - Kulnura, the wider ABS statistical area containing Mangrove Creek. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mangrove Creek itself.
4,793 in 2001 to 4,678 in 2025, down 2%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Mangrove Creek data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 3 October 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
Check a specific Mangrove Creek address
See exactly which overlays touch a single property - the interactive map is free. Need it on paper? A full planning PDF is just $9.
Aircraft have been seen below 3,000 ft over about 13% of Mangrove Creek. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Mangrove Creek. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Mangrove Creek lot.
See what's in the $9 report →Mangrove Creek planning - frequently asked
Is Mangrove Creek flood-prone?
Flood mapping covers Mangrove Creek and less than 1% of the suburb falls within a mapped flood overlay (the council-wide suburb average is 30%). Published flood models are held over parts of Mangrove Creek; the free check on the Flood Model Report page says whether one reaches a given address.
Is Mangrove Creek bushfire-prone?
Around 100% of Mangrove Creek is mapped as bushfire-prone, compared with a Central Coast average of 69%.
Is Mangrove Creek under a flight path?
Aircraft were observed below 3,000 ft over about 13% of Mangrove Creek, and over about 40% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 1,000 ft, with an average of 4,000 ft. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Mangrove Creek?
The dominant planning zone in Mangrove Creek is National Parks and Nature Reserves, though the suburb also includes Environmental Conservation and Infrastructure.
Does Mangrove Creek have heritage-listed places?
Mangrove Creek has 5 heritage-listed places on record.
What is the typical lot size in Mangrove Creek?
Across 57 surveyed parcels in Mangrove Creek, the median lot size is about 132,644 m².
What is the population of Mangrove Creek?
At the 2021 Census Mangrove Creek had 56 usual residents, with a median age of 34 and an average household size of 3.7 people. The wider Calga - Kulnura statistical area, which contains Mangrove Creek, went from 4,793 people in 2001 to 4,678 in 2025, down 2%.
Is Mangrove Creek an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mangrove Creek scores 987 and sits in decile 6 of 10 nationally and decile 5 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Mangrove Creek?
Median household income in Mangrove Creek was $2,125 a week at the 2021 Census, against $1,735 for the typical suburb in Central Coast. Median rent was $650 a week and the median mortgage repayment $3,359 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Greengrove | 3.9 km | 13% | 96% |
| Lower Mangrove | 5.3 km | 16% | 93% |
| Ten Mile Hollow Hawkesbury |
5.5 km | 0% | 100% |
| Mangrove Mountain | 5.9 km | 0% | 92% |
| Upper Mangrove | 6.8 km | 0% | 100% |
| Glenworth Valley | 7.6 km | 12% | 94% |
| Gunderman | 8.5 km | 9% | 96% |
| Peats Ridge | 9.6 km | Not mapped | 80% |
| Spencer | 10.0 km | 19% | 87% |
| Wrights Creek Hawkesbury |
10.0 km | 0% | 100% |